1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andreyy89
3 years ago
15

Alizarin yellow is a pH indicator that transitions from red to yellow when the pH falls from a value of 11 to below 10. Why is p

henol red a better pH indicator than alizarin yellow for detecting a change in pH of broth containing pathogenic bacteria such as E. coli
Biology
1 answer:
nydimaria [60]3 years ago
7 0

Answer:

The correct answer is - acidic conditions wouldn't trigger a change in the color of Alizarin yellow.

Explanation:

The growth of E. coli generally occurs at neutral pH, however, its growth is normal at acidic conditions as well.  The change in the growth of  E. coli is not able to detect by alizarin.

The phenol red turns yellow in the presence of an acid, and the change in pH in an alkaline environment can be detected by the red color of phenol red. Growth of E.coli will grow in pH of 10-12 . But, very slowly. The color change in alizarin is also apparent at pH 10.2 to 12 only.

You might be interested in
Which of the following are common end products of aerobic and anaerobic
sesenic [268]

Answer:

CO2 is released during both lactic acid and alcoholic fermentation reactions.

Water is produced as a result of fermentation reactions.

6 0
2 years ago
Mitosis is divided into phases. A phase of mitosis is shown. All of the chromosomes are lined up at the center of the cell. Whic
Anna [14]
There is no diagram but i believe the answer plus be metaphase! a quick way to remember that is if they are lined in the middle, it’s metaphase!
6 0
3 years ago
Read 2 more answers
Proteins are broken down into ___________ by the enzyme ____________
sergij07 [2.7K]

Answer: Proteins are broken down into amino acids by protease enzymes.

Explanation:

Protein is an essential nutrients which is needed for growth and development. Protein is the major constituent of hormones, enzymes, eyes, muscles e.t.c.

The protein sources are eggs,beans,meats, milk e.t.c.

Protein digestion start in the stomach. Once protein consume get to the intestine, hydrochloric acid and protease enzymes breakdown protein into amino acids.The Amino acids are linked together by peptides bond. The perform this by cleaving to the peptides bond within the protein by a process called hydrolysis.

5 0
3 years ago
In order to make a protein the messenge on DNA must be converted to what?
Soloha48 [4]

Explanation:

-mRNA or messenger RNA

DNA wound into chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand.

Further Explanation:

Nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.

  • Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar, these nitrogen bases which may contain single to double bond ring.

Nucleic acids like DNA stores all of an organism’s genetic information. Nucleic acid molecules comprise the nitrogenous bases Guanine, Adenine, Cytosine and Thymine. Conversely, RNA nucleotides are Adenine, Guanine, Cysteine and Uracil. These pair up as base pairs due to their varied structure- largely influenced by the location of N molecule.  

In certain combinations, these bases form codons which act as instructions for protein synthesis. Codons are three nucleotide bases encoding an amino acid or signal at the beginning or end of protein synthesis.

RNA codons determine certain amino acids, so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Guanine, Cysteine and Uracil). Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.

Thus, these contribute to the broad diversity of living organisms, as varied combinations of these 64 codons can produce many proteins which can be organized into cells, tissues and organisms.

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

7 0
3 years ago
Can you please help me somebody??????
zepelin [54]
I believe that the answer is frequency. :)
6 0
3 years ago
Read 2 more answers
Other questions:
  • Plants use nitrogen in fertilizers for growth. However, much of the nitrogen goes unused. What is one direct outcome of this exc
    8·2 answers
  • Why use needle loop to prepare fungi slide? Please, help me
    5·1 answer
  • Will mark brainliest if correct!
    13·1 answer
  • In humans, ABO blood types refer to glycoproteins in the membranes of red blood cells. There are three alleles for this autosoma
    13·2 answers
  • What human-made structures do you see from 100m?
    8·2 answers
  • Prokaryotic cells reproduce (choose the best answer: asexually or sexually
    15·1 answer
  • Compare the roles of the phospholipid bilayer in passive and active transport.
    15·1 answer
  • 1
    11·1 answer
  • A passive continental margin has a ___, while an active margin does not. ​
    8·1 answer
  • Why do people think matter in conserved in cellular respiration
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!